Dau Tu Xay Dung Va Tu Van Dich Vu Vien Thong Viet Nam Joint Stock Company Address: No 5a3 Civil Group 6, Nguyen Van Linh Street, Phuc Dong Ward, Long Bien District, Ha Noi City Enterprise code: 0108415183 Phone: 0916584040 Representative: Duong Huy Hoang Phuc Dong Ward, Long Bien District, Ha Noi CityFounding date: 12 - 9 - 2018